1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/*-------------------------------------------------------------------------
ralloc.h - header file register allocation
Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
PIC port - T. Scott Dattalo scott@dattalo.com (2000)
PIC16 port - Martin Dubuc m.dubuc@rogers.com (2002)
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
In other words, you are welcome to use, share and improve this program.
You are forbidden to forbid anyone else to use, share and improve
what you give them. Help stamp out software-hoarding!
-------------------------------------------------------------------------*/
#include "SDCCicode.h"
#include "SDCCBBlock.h"
#ifndef SDCCRALLOC_H
#define SDCCRALLOC_H 1
#include "pcoderegs.h"
enum
{
R2_IDX = 0, R3_IDX, R4_IDX,
R5_IDX, R6_IDX, R7_IDX,
R0_IDX, R1_IDX, X8_IDX,
X9_IDX, X10_IDX, X11_IDX,
X12_IDX, CND_IDX
};
enum {
REG_PTR=1,
REG_GPR,
REG_CND,
REG_SFR,
REG_STK,
REG_TMP
};
//#define REG_PTR 0x01
//#define REG_GPR 0x02
//#define REG_CND 0x04
//#define REG_SFR 0x08
//#define REG_STK 0x10 /* Use a register as a psuedo stack */
//#define REG_TMP 0x20
/* definition for the registers */
typedef struct reg_info
{
short type; /* can have value
* REG_GPR, REG_PTR or REG_CND
* This like the "meta-type" */
short pc_type; /* pcode type */
short rIdx; /* index into register table */
// short otype;
char *name; /* name */
unsigned isFree:1; /* is currently unassigned */
unsigned wasUsed:1; /* becomes true if register has been used */
unsigned isFixed:1; /* True if address can't change */
// unsigned isMapped:1; /* The Register's address has been mapped to physical RAM */
unsigned isBitField:1; /* True if reg is type bit OR is holder for several bits */
unsigned isEmitted:1; /* True if the reg has been written to a .asm file */
unsigned accessBank:1; /* True if the reg is explicit placed in access bank */
unsigned isLocal:1; /* True if the reg is allocated in function's local frame */
unsigned address; /* reg's address if isFixed | isMapped is true */
unsigned size; /* 0 for byte, 1 for int, 4 for long */
unsigned alias; /* Alias mask if register appears in multiple banks */
struct reg_info *reg_alias; /* If more than one register share the same address
* then they'll point to each other. (primarily for bits)*/
operand *regop; /* reference to the operand used to create the register */
pCodeRegLives reglives; /* live range mapping */
}
reg_info;
extern reg_info regspic16[];
extern int pic16_nRegs;
extern int pic16_Gstack_base_addr;
/*
As registers are created, they're added to a set (based on the
register type). Here are the sets of registers that are supported
in the PIC port:
*/
extern set *pic16_dynAllocRegs;
extern set *pic16_dynStackRegs;
extern set *pic16_dynProcessorRegs;
extern set *pic16_dynDirectRegs;
extern set *pic16_dynDirectBitRegs;
extern set *pic16_dynInternalRegs;
extern set *pic16_builtin_functions;
extern set *pic16_rel_udata;
extern set *pic16_fix_udata;
extern set *pic16_equ_data;
extern set *pic16_int_regs;
extern set *pic16_acs_udata;
void pic16_assignRegisters(ebbIndex *ebbi);
reg_info *pic16_regWithIdx(int);
reg_info *pic16_typeRegWithIdx(int, int, int);
reg_info *pic16_dirregWithName(const char *name);
reg_info *pic16_allocregWithName(const char *name);
reg_info *pic16_regWithName(const char *name);
void pic16_freeAllRegs(void);
void pic16_deallocateAllRegs(void);
reg_info *pic16_findFreeReg(short type);
reg_info *pic16_findFreeRegNext(short type, reg_info *creg);
reg_info *pic16_allocWithIdx(int idx);
reg_info *pic16_allocDirReg (operand *op);
reg_info *pic16_allocRegByName (const char *name, int size, operand *op);
extern char *pic16_decodeOp(unsigned int op);
reg_info* newReg(int type, short pc_type, int rIdx, const char *name, unsigned size, int alias, operand *refop);
/* Define register address that are constant across PIC16 family */
#define IDX_TMR0 0xfd6
#define IDX_STATUS 0xfd8
#define IDX_INTCON 0xff2
#define IDX_WREG 0xfe8
#define IDX_BSR 0xfe0
#define IDX_PCL 0xff9
#define IDX_PCLATH 0xffa
#define IDX_PCLATU 0xffb
#define IDX_TOSL 0xffd
#define IDX_TOSH 0xffe
#define IDX_TOSU 0xfff
#define IDX_TBLPTRL 0xff6
#define IDX_TBLPTRH 0xff7
#define IDX_TBLPTRU 0xff8
#define IDX_TABLAT 0xff5
#define IDX_FSR0 0xfe9
#define IDX_FSR0L 0xfe9
#define IDX_FSR0H 0xfea
#define IDX_FSR1 0xfe1
#define IDX_FSR1L 0xfe1
#define IDX_FSR1H 0xfe2
#define IDX_FSR2 0xfd9
#define IDX_FSR2L 0xfd9
#define IDX_FSR2H 0xfda
#define IDX_INDF0 0xfef
#define IDX_POSTINC0 0xfee
#define IDX_POSTDEC0 0xfed
#define IDX_PREINC0 0xfec
#define IDX_PLUSW0 0xfeb
#define IDX_INDF1 0xfe7
#define IDX_POSTINC1 0xfe6
#define IDX_POSTDEC1 0xfe5
#define IDX_PREINC1 0xfe4
#define IDX_PLUSW1 0xfe3
#define IDX_INDF2 0xfdf
#define IDX_POSTINC2 0xfde
#define IDX_POSTDEC2 0xfdd
#define IDX_PREINC2 0xfdc
#define IDX_PLUSW2 0xfdb
#define IDX_PRODL 0xff3
#define IDX_PRODH 0xff4
/* EEPROM registers */
#define IDX_EECON1 0xfa6
#define IDX_EECON2 0xfa7
#define IDX_EEDATA 0xfa8
#define IDX_EEADR 0xfa9
#define IDX_KZ 0x7fff /* Known zero - actually just a general purpose reg. */
#define IDX_WSAVE 0x7ffe
#define IDX_SSAVE 0x7ffd
#define IDX_GPSIMIO 0xf7f
#define IDX_GPSIMIO2 0xf7e
#endif
|
